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Mumz [18]
3 years ago
9

A tv costs £800. Work out the price after a 3% discount.

Mathematics
2 answers:
aleksandrvk [35]3 years ago
6 0

Answer:

Selling Price = £776

Step-by-step explanation:

Costing price = £800

Discount = 3% of 800

=> 3/100 × 800

=> 3×8

= £ 24

Selling Price = COSTING PRICE - DISCOUNT

Selling price = 800-24

Selling price = £776

Blababa [14]3 years ago
5 0

3% = 800/ 100 = 8, 8x3= 24

800-24 = 776

£776

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Answer:

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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4 0
3 years ago
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Step-by-step explanation:

8 0
3 years ago
When I double my number and add eight I get my number plus twelve
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7 0
3 years ago
Phillipa is a scientist who grows yeast cells. She starts her experiment with 700 yeast cells and notices the growth rate of the
musickatia [10]

Answer:

  1. 700 initial cells
  2. 2486 cells after 25 hours

Step-by-step explanation:

#1 There are 700 yeast cells when Phillipa starts her experiment. (This value is given in the problem statement.)

__

#2 For this, we must assume the time period that is associated with the 5.2% growth. (The problem statement does not specify it.)

The general form of the equation for exponential growth is ...

  f(t) = (initial value)×(growth multiplier in time period)^(number of periods)

When the growth (or decay) rate is indicated as a percentage (r), the "growth multiplier in time period" is generally ...

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Here, the value of "r" is 5.2% = 0.052, so the growth multiplier in the time period is ...

  1 + 0.052 = 1.052

__

As we said, the time period is not specified. Since the only time period mentioned in the problem is 25 hours, we might reasonably assume that the 5.2% growth occurs in one hour. Then the cell population is ...

  f(t) = 700×1.052^t . . . . . . for t in hours

After 25 hours, ...

  f(25) = 700×1.052^25 ≈ 700×3.55135 ≈ 2485.9 ≈ 2486

The number of yeast cells present after 25 hours is about 2486.

4 0
3 years ago
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